Improvement in plows



G. BARTLETT,

How. I

No. 4,976. Patented Feb. 20,- 1847.

AM. PHOTO-LITHO. Cb. N.Y. (OSBDRNE'S PROCESS.)

UrvITED STATES PATENT OFFICE.

GEORGE BARTLETT, OF SMITHFIELD, RHODE ISLAND.

IMPROVEMENT IN PLOWS.

Specification forming part of Letters Patent No. 4,976, dated February20, 1847.

To all whom it may concern:

Be it known that I, GEORGE BARTLETT, of Smithfield, in the county ofProvidence and State of Rhode Island, have invented, constructed, made,and applied to use a new and useful Improvement in the Mode ofConnecting Plows Together, called George Bartlet-ts Improved Plow, andmy said invention or improvement'is by me plainly and fully specified inthe words and figures following, to wit:

Reference being bad to the annexed drawings, two plows, A and B, of theordinary construction, (or differing from the ordinary construction inhaving but one handle each, and that on the landside of the plow, thehandle ofthe forward plow, A, ofsuch length and form as to be even withthe handle of the back plow, B,)are connected together by means ofaframe and iron joints in the manner described as follows A frame ismade, in the form represented in Figure F, 01' four sticks of timberthree inches by four in size. Two of these sticks, each two and a halffeet in length, are joined together by two others, each of a lengthequal to the width of the furrow which one plow will cut, firmlymortised into the two long sticks at right angles with them. The forwardpart of the frame is attached to the plow A at 9, near the end of thebeam, by two iron bolts connected by ajoint, as represented bythedrawiu'g J, the joint being on the upper side ofthe beam. The backpartot' the frame is connected with the same plow, A, by means of thelong iron rod 1, three-fourths ofan inch in diameter, bent asrepresented in the drawings, so as to allow the plow to roll. This longbent rod is connected by a joint to a short bolt, which passes throughthelower end ofthe plow-handle.

The forward part of the near-side piece .of the frame is attached to theback plow, B, at h, near the end of the beam, by means of ajoint, asrepresented in the drawings, K J. Thisjoint is formed of two pieces ofiron, onefastened firmly to the lower side of the frame by screws orbolts, and s0 bent as to pass down below the beam and allow the beam toroll. A bolt connected with this rod of iron by a joint immediatel ybelow the beam passes up through the beam, and is secured by a nut onthe upper side of the beam. As the team must be attached to the backplow at a point lower than that to which it is atra'ched to the forwardplow, this joint is thus located to place it near the line of draft. It,therefore, from any cause, the team is connected with the back plow at apoint above the middle of the beam, thejoint should be constructed asdescribed for the forward plow and placed on the upper side of the beam.The back part of the frame is attached to the plow B in the same manneras to the plow A.

When plows of the ordinary construction are used the bent rods at theback part ofthe. frame may be connected with the plows by means ofajoint, as represented at l.

The handles are connected at m by means of a stifi' rod with ajoint ateach end, as represented in the drawing a.

The team is attached to the middle of a chain, which is hooked at theends into the two shackles at the ends of the beams.

The point of the back plow, B, should be even with the back part of theforward plow, A.

When more than two plows are used the width of the frame is increased,and the additional plows are connected with itin the same manner asthose already described.

For marking or furl-owing ground to plant, the frame is made of suitablewidth, and the plows may be placed even with each other, or at the samedistance from the team.

I claim The location of the joints near the line of daft, or, in otherwords, near the axis about which the plow should, and ordinarily does,revolve when rolled for the purpose of guiding it.

In testimony that theforegoingisa true specilicatiou of my saidimprovement I have hereunto set my hand this 1st day of February, in

the year of our Lord 1847.

GEORGE BARTLETT. In presence of- NATHAN STEVENS, WILLARD SAYLES.

